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49-6000247 Rev. 1
Troubleshooting
Before you call for service....
Save time and money! Review the chart below first and you may not need to call for service.
CAUTION
For your safety,
DO NOT
attempt repair of electrical wiring, controls, heating elements or other
safety devices. Refer repairs to qualified service personnel.
Problem
Possible Causes
What To do
OPERATION AND PERFORMANCE
Not enough or no hot
water
Water temperature may be
set too low
• See the
Water Temperature Adjustment
and
Water Heater
Capacity
sections (see pages 4 and 6).
Cold water inlet temperature
may be colder during the
winter months
•
This is normal. The colder inlet water takes longer to heat.
• Consider increasing the set temperature as described in the
Water
Temperature Adjustment
section.
Leaking or open hot water
faucets
• Make sure all faucets are closed.
Long runs of exposed pipe,
or hot water piping on
outside wall
• Insulate piping.
Dip tube damaged
• Contact your local installer, plumbing contractor, or previously
agreed upon service agency.
A fuse is blown, circuit
breaker tripped, or electric
service to your home may be
interrupted
• Replace fuse or reset circuit breaker.
• Contact the local electric utility.
Inadequate wiring
• See the
Installation Instruction
s.
Manual reset high limit (ECO)
•
See the
Safety Controls
section, see page 5.
Water Connections to unit
reversed
• Correct piping connections.
Water is too hot
Water temperature is set too
high
• See
the Water Temperature Adjustment
section.
Thermostat has failed
• Contact your local installer, plumbing contractor, or previously
agreed upon service agency.
OTHER
Rumbling noise
Water conditions in your
home caused a buildup of
scale or mineral deposits on
the heating elements
• Remove and clean the heating elements. This should only be
done by a qualified service person or plumbing contractor.
Water dripping down the
outside of the heater
Hot/Cold water connections
or other parts have loosened
•
Tighten the loose connections. This should only be done by a
qualified service person or plumbing contractor.
Relief valve producing
popping sound or
draining
Pressure buildup caused
by thermal expansion to a
closed system
• This is an unacceptable condition and must be corrected. See
Thermal Expansion
section on page 14. Do not plug the relief
valve outlet. Contact a plumbing contractor to correct this.
Hot water has a rotten
egg or sulfur smell
Certain water supplies with
high sulfate content will react
with the anode rod that is
present in all water heaters
for corrosion protection of
the tank
• In certain cases, increasing the tank temperature to 140°F (60°C)
can reduce this odor issue. Reference the Water Temperature
Adjustment section of the Important Safety Information of this
manual for procedure and dangers of scalding water. Installation of
temperature limiting valves can be used to reduce risk of scalding.
TROUBLESHOOTING
